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In a Ping-Pong tournament, there are 12 brand new Ping-Pong balls in a box. In each day, 3 balls are picked from the box at

In a Ping-Pong tournament, there are 12 brand new Ping-Pong balls in a box. In each day, 3 balls are picked from the box at random and are used for matches. At the end of each day, 1 ball is returned to the box. What is the probability that, on the third day of the tournament, all 3 of the balls drawn are new?

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